<template>
    <div class="header">
        <!-- 折叠按钮 -->
        <div class="collapse-btn" @click="collapseChage">
            <i v-if="!collapse" class="el-icon-s-fold"></i>
            <i v-else class="el-icon-s-unfold"></i>
        </div>
        <div class="logo">vAdminTpl</div>
        <div class="top-menu">
            <div v-for="(item,index) in topMenuMap" :key="index"
                 :class="['menu-nav',item.key == topMenuKey ? 'menu-active' : '']"
                 @click="topMenuChange(item.key)"
            >{{item.name}}</div>
        </div>
        <div class="header-right">
            <div class="header-user-con">
                <!-- 全屏显示 -->
                <div class="btn-fullscreen" @click="handleFullScreen">
                    <el-tooltip effect="dark" :content="fullscreen?`取消全屏`:`全屏`" placement="bottom">
                        <i class="el-icon-rank"></i>
                    </el-tooltip>
                </div>
                <!-- 消息中心 -->
                <div class="btn-bell">
                    <el-tooltip
                        effect="dark"
                        :content="message?`有${message}条未读消息`:`消息中心`"
                        placement="bottom"
                    >
                        <router-link to="/tabs">
                            <i class="el-icon-bell"></i>
                        </router-link>
                    </el-tooltip>
                    <span class="btn-bell-badge" v-if="message"></span>
                </div>
                <!-- 用户头像 -->
                <div class="user-avator">
                    <img src="../../assets/img/img.jpg" />
                </div>
                <!-- 用户名下拉菜单 -->
                <el-dropdown class="user-name" trigger="click" @command="handleCommand">
                    <span class="el-dropdown-link">
                        {{username}}
                        <i class="el-icon-caret-bottom"></i>
                    </span>
                    <el-dropdown-menu slot="dropdown">

                        <a href="https://github.com/ityong/vue-tpl-admin.git" target="_blank">
                            <el-dropdown-item>项目仓库-github</el-dropdown-item>
                        </a>
                        <a href="https://gitee.com/ityong/vue-tpl-admin.git" target="_blank">
                            <el-dropdown-item>项目仓库-gitee</el-dropdown-item>
                        </a>
                        <el-dropdown-item divided command="loginout">退出登录</el-dropdown-item>
                    </el-dropdown-menu>
                </el-dropdown>
            </div>
        </div>
    </div>
</template>
<script>

import {topMenuMap} from '../../conf/menu'

export default {
    data() {
        return {
            topMenuKey: 'index',
            topMenuMap: topMenuMap,
            collapse: false,
            fullscreen: false,
            name: 'styleyong',
            message: 2
        };
    },
    computed: {
        username() {
            let username = localStorage.getItem('ms_username')
            return username ? username : this.name
        }
    },

    methods: {
        // 用户名下拉菜单选择事件
        handleCommand(command) {
            if (command == 'loginout') {
                this.$store.commit('setToken','')
                this.$router.push('/login')
            }
        },
        //顶部菜单切换
        topMenuChange(key) {

            this.$root.$emit('topMenuChange',key)
            this.topMenuKey = key
        },
        // 侧边栏折叠
        collapseChage() {
            this.collapse = !this.collapse
            this.$root.$emit('collapse', this.collapse)
        },
        // 全屏事件
        handleFullScreen() {
            let element = document.documentElement
            if (this.fullscreen) {
                if (document.exitFullscreen) {
                    document.exitFullscreen()
                } else if (document.webkitCancelFullScreen) {
                    document.webkitCancelFullScreen()
                } else if (document.mozCancelFullScreen) {
                    document.mozCancelFullScreen()
                } else if (document.msExitFullscreen) {
                    document.msExitFullscreen()
                }
            } else {
                if (element.requestFullscreen) {
                    element.requestFullscreen()
                } else if (element.webkitRequestFullScreen) {
                    element.webkitRequestFullScreen()
                } else if (element.mozRequestFullScreen) {
                    element.mozRequestFullScreen()
                } else if (element.msRequestFullscreen) {
                    // IE11
                    element.msRequestFullscreen()
                }
            }
            this.fullscreen = !this.fullscreen
        }
    },
    mounted() {
        if (document.body.clientWidth < 1500) {
            this.collapseChage()
        }
    }
};
</script>
<style scoped>
.header {
    position: relative;
    box-sizing: border-box;
    width: 100%;
    height: 70px;
    font-size: 22px;
    color: #fff;
}
.collapse-btn {
    float: left;
    padding: 0 21px;
    cursor: pointer;
    line-height: 70px;
}
.header .logo {
    float: left;
    min-width: 140px;
    line-height: 70px;
    margin-right: 10px;
}
.header .top-menu{
    float: left;
    display: flex;
    justify-content: flex-start;
    margin-top: 20px;
}
.header .top-menu .menu-nav{
    float: left;
    display: flex;
    height: 35px;
    line-height: 35px;
    padding: 2px 10px;
    margin-left: 10px;
    font-size: 16px;
}
.header .top-menu .menu-nav:hover{
    border-radius: 5px;
    color: rgb(32, 160, 255);
    cursor: pointer;
}

.header .menu-active{
    color: rgb(32, 160, 255);
}

.header-right {
    float: right;
    padding-right: 50px;
}
.header-user-con {
    display: flex;
    height: 70px;
    align-items: center;
}
.btn-fullscreen {
    transform: rotate(45deg);
    margin-right: 5px;
    font-size: 24px;
}
.btn-bell,
.btn-fullscreen {
    position: relative;
    width: 30px;
    height: 30px;
    text-align: center;
    border-radius: 15px;
    cursor: pointer;
}
.btn-bell-badge {
    position: absolute;
    right: 0;
    top: -2px;
    width: 8px;
    height: 8px;
    border-radius: 4px;
    background: #f56c6c;
    color: #fff;
}
.btn-bell .el-icon-bell {
    color: #fff;
}
.user-name {
    margin-left: 10px;
}
.user-avator {
    margin-left: 20px;
}
.user-avator img {
    display: block;
    width: 40px;
    height: 40px;
    border-radius: 50%;
}
.el-dropdown-link {
    color: #fff;
    cursor: pointer;
}
.el-dropdown-menu__item {
    text-align: center;
}
</style>
